HS Code for Unbleached sulphite pulp

The classification of unbleached sulphite pulp under HS code 4704.19 is determined by the chemical extraction process and the botanical origin of the wood fibers. This specific code refers to chemical wood pulp obtained through the sulphite process, where wood chips are cooked in a pressurized vessel with a solution of sulfurous acid and a base, such as calcium, magnesium, or ammonia. Unlike the more common Kraft (sulphate) process, the sulphite process results in fibers that are generally lighter in color and easier to refine, though in this instance, the product remains in its unbleached state. The designation 4704.19 specifically excludes coniferous wood (softwoods like pine or spruce) and instead focuses on non-coniferous sources, commonly referred to as hardwoods such as birch, eucalyptus, or aspen. Furthermore, this classification is reserved for pulp that is not of \"dissolving grades,\" which are high-purity pulps used for chemical derivatives like rayon. The unbleached nature of the pulp means it retains more lignin than bleached varieties, providing different structural properties suitable for specific paper and paperboard applications where high brightness is not the primary requirement. The Harmonized System organizes wood pulp based on the level of processing and the chemical treatment applied. Under heading 4704, the distinction between coniferous and non-coniferous is paramount, as is the distinction between bleached and unbleached states. For 4704.19, the importer must ensure the pulp is derived from broad-leaved trees and has not undergone any whitening or bleaching treatments. This pulp is typically used in the production of specialty papers, certain types of tissue, or as a component in multi-ply paperboard where the internal layers do not require high whiteness.

Products Included

• Unbleached hardwood sulphite pulp
• Unbleached birch sulphite pulp
• Unbleached eucalyptus chemical pulp
• Non-coniferous sulphite pulp for industrial paper production

Common Misclassification

This code is frequently confused with 4704.11, which covers unbleached sulphite pulp derived from coniferous wood (softwoods). It is also often misclassified under 4704.29, which is the code for bleached non-coniferous sulphite pulp. Another common error is using 4702.00, which is strictly reserved for chemical wood pulp of dissolving grades, regardless of the chemical process used.

FAQ

What is the HS code for unbleached sulphite pulp?

The HS code for unbleached sulphite pulp of non-coniferous wood is 4704.19. If it were from coniferous wood, it would be 4704.11.

What is the difference between sulphite and sulphate pulp?

Sulphite pulp (4704) is produced using sulfurous acid salts, while sulphate pulp (4703), also known as Kraft pulp, is produced using sodium hydroxide and sodium sulphide. Kraft pulp is generally stronger, while sulphite pulp is easier to bleach and refine.